Player won't use Ethernet, factory resetting failed

[Swiftie]

If all else fails, you could go buy a cheap WiFi access point, plug it into the ethernet cable which you have plugged into the receiver and you'll get 100% wireless strength all the time.

I went this route as there was almost no WiFi coverage in my living room, so I needed a solution which included getting the controller working reliably.

A spin-off benefit is that all my WiFi capable entertainment devices also get 100% now. In my case, I bought a cheap switch as well. This meant that I could ethernet connect anything that would benefit. I did this mostly for my TV, which doesn't speak the same dialect of DHCP as my Router...

And to cap it all, I use a pair of powerline adapters to get the ethernet into the living room, as I didn't want to drill a big hole through the wall (It was originally a double-skinned external wall, and it has power cables running through the cavity, so any boring risks hitting a mains cable (and getting exciting, very quickly).

This entire setup seemed a bit "Heath-Robinson" when I first envisioned it, but it works absolutely perfectly!

[toby10]

..... The good news is that it does look like it has connected using the Ethernet, since its reporting WiFi is now 100%....

You are still using WiFi I believe. Try turning off the entire WiFi portion of your router (simple UI click), now look at that signal info screen. Make sure that WiFi info is for the player (Receiver) and not the Controller. Then try ethernet setup.